USB booting :: too many Cylinders....



Hi,

I have followed USB install form docs. ..but changing flash drive to less than 1024 Cylinders has got me stumped

I have got 32 sectors/track 9 heads but 1776 Cylinders....

Changing them using sfdisk is not problem but I cannot work out the correct geometry ....

Flash drive is PQI 256mb

Thanks in Advance

Mr Green

The easy solution is to just use fdisk to delete the partition and repartition it will all the default values (except for the partition type: it needs to be FAT, or type 6).  Then it will work.  I've tried it on a SanDisk Cruzer mini and a PNY Attaché 256MB, and they both worked.
Quote
I have got 32 sectors/track 9 heads but 1776 Cylinders....


OK, try this..

32 * 9 * 1776 = 511488 total

So lets double our heads, and halve our cylinders

32 * 18 * 888 = 511488 total

Now your sector count stays at 32,
and your cylinder count is below 1024 ..  

sfdisk -f -S32 -H18  /dev/sda

This configuration should work nicely
with the  "Install to Pendrive" script,
and booting from bios using USB-ZIP..

:)

73
ke4nt

Thank you very much drive is set now ....

I cannot boot it yet have not figured out if I need to set something else in BIOS other than USB-ZIP ..

On boot up it just sits there .... atm

USB-ZIP is first booting device but does bios know its bootable

Hope that makes sense .....

How tos  are confusing as some say to set filesystem type (mkfs) others do not mention it ...

I guess with so many different types of PC's & Usb pendrives it hard to cover all bases....

Back to Grind

Mr Green

I also have to set my USB Keyboard to "enabled"  ( in bios )
to make my USBKey bootup..

Let us know..

73
ke4nt

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